String mainData = "{\"cityPower\":1,\"oilEngine\":1,\"hour\":3.5,\"interruptCause\":\"帮忙\",\"supply\":\"发电抢救\"}";
        JsonNode jnNodeA = JSONUtils.stringToJsonObject(mainData);
        String columnValue = jnNodeA.get("hour").toString();
        System.out.println(columnValue);
